Chapter 3 Lenses for Conceptualizing Problems and Interventions: Biopsychosocial Dimensions Flashcards
Disease model
rooted in physiological processes that affect behavior and development
Medical model
this model emerged from Freud’s ideas about the roots of psychological problems as well as from advances in medicine and in our understanding of physiological problems as well as from advances in medicine and in our understanding of physiological processes
The medical model posits that
- Diseases can be identified through a list of symptoms
- These symptoms can be alleviated through logical and scientific examination of the “patient”
Diagnostic and Statistical Manual of Mental Disorders (DSM)
describes the symptoms, etiology (causes), prevalence, and other aspects of most major mental health problems
The nervous system
a complex electrochemical communication system for the body
Central nervous system
consists of the brain and the spinal cord
Peripheral nervous system
connects the brain and spinal cord to other parts of the body
brainstem
regulates physiological functions such as sleep, temperature, and heart rate
Thalamus
sits at the top of the brainstem and serves as a relay station for sensory information - has to do with sleep and wakefulness
Cerebral cortex
the principal outer structure is responsible for complex mental functions such as planning and thinking
Neocortex
the outermost part makes up about 80% of the cortex - language, judgment, and abstract reasoning
Right hemisphere
responsible for helping us process emotion, nonverbal communication, and sensations such as touch and pressure
Left hemisphere
helps us to process things like language and fine motor movements
Broca’s area and Wernicke’s area
these two areas are located in the left hemisphere and help us to control and understand language
Corpus callosum
this large bundle of axons connects the two hemispheres and relays information between the two
Occipital lobes
These two areas at the back of the cerebral cortex allow us to process information such as color, shape, and motion
Temporal lobes
two lobes at the sides of the cerebral cortex are responsible for hearing, language, and memory
Frontal lobes
Large areas at the front of the cerebral cortex are responsible for personality, intelligence, and voluntary control of muscles (Phineas Gage)
Prefrontal lobes
These lobes on top of the head are responsible for attention, spatial location, and motor control
Limbic system
Between the brainstem and the cerebral cortex are two important structures
Amygdala
helps us to recognize and discriminate things necessary to our survival, such as mates, food, and social rivals
hippocampus
helps us to determine what information to store as memories and which information to recall
Traumatic brain injuries (TBI) and chronic traumatic encephalopathy (CTE)
a degenerative brain disease found among athletes, military veterans, and others who experience repetitive brain trauma
Neurons
cells that process information
Neurons key structures
- cell body with the nucleus
- dendrites
- axon
- myelin sheath
- collateral sprouting
- substitution of function
- neurogenesis
Dendrites
allow neurons to receive input from other neurons
Axon
carries information away from the cell body to other neurons
Myelin sheath
a layer of fat covering the axon that facilitates the nerve impulses that allow neurons to communicate
Collateral sprouting
The axons of healthy neurons adjacent to damaged ones grow new branches
Substitution of function
A damaged region of the brain is taken over by another, healthier area of the brain
Neurogenesis
new neurons are generated; occurs in the hippocampus
Neurotransmitters
chemicals that can activate electrical impulses in the nervous system
The 3 ways neurons communicate with each other
- synapse
- terminal buttons
- receptor sites
Synapse (or synaptic gap)
Since neurons do not directly touch one another, they must use chemicals to carry messages across the space between them (lie between the axon of one neuron and the dendrite of another)
Terminal buttons
little sacs containing neurotransmitters
Receptor sites
The dendrites of the receiving neuron have a variety of receptor sites, each of which accommodates a specific neurotransmitter. If there is a fit between the receptor and the neurotransmitter, the receiving neuron will accept the signal
Reuptake
once the transmission of a neural impulse is complete, some of the neurotransmitter molecules that have not fit into receptor sites are reabsorbed into the axon
Endocrine system
consists of a set of glands that work in concert with the nervous system
Acetylcholine (ACh)
Stimulates neurons to fire; involved in muscle movements, learning, and memory
Dopamine
Controls voluntary movements; affects sleep, mood, learning, and attention
Endorphin
Stimulates neurons to fire and depresses nervous system activity
GABA
Inhibits neurons from firing
Glutamate
Stimulates neurons to fire; involved in learning and memory
Norepinephrine
Inhibits firing of neurons in the central nervous system; stimulates neurons to fire in the heart, muscles, intestines, and urogenital tract; controls alertness
Oxytocin
Associated with love and bonding
Serotonin
Regulates sleep, mood, attention, and learning
How many pairs of chromosomes does the nucleus of our cells contain?
23 pairs
Sex chromosomes
determine whether we are male (XY) or female (XX)
deoxyribonucleic acid (DNA)
Carries our genetic information
genes
units of hereditary information composed of segments of DNA that direct and regulate the production of proteins, or amino acids, which are the basis of all of our bodily functions
homozygous
when a pair of chromosomes consists of two dominant or two recessive genes
heterozygous
when a pair of chromosomes consists of a dominant and a recessive gene
genotype
The genes that we inherit and carry - that we possess in our chromosomes
phenotype
the way in which genes are expressed - that are actually observable, such as blue eyes
Dominant single-gene disorder
Huntington’s disease
Recessive single-gene disorder
Cystic fibrosis
X-linked single-gene disorder
Hemophilia